Parker 72338247 Push-to-connect Union 1/4 X 3/8 Inch Od

Product Description

The PARKER 72338247 is a push-to-connect union tube fitting designed to join two tube runs without tools, threading, or solder. It accepts tubing with outside diameters of 1/4 inch on one end and 3/8 inch on the other, making it a reducing union for mixed-size pneumatic or fluid lines. The body is molded from bio-sourced Nylon 11, which offers good chemical resistance and flexibility compared to standard Nylon 12. The EPDM o-ring seals provide a rated working pressure of 230 psi. Plumbers, HVAC technicians, and pneumatic system installers use this fitting where quick, reliable tube connections are needed in tight spaces or during service calls.

This fitting is suited for pneumatic tubing systems, light fluid transfer lines, and instrumentation applications in both residential and light commercial environments. The reducing union configuration is commonly used when transitioning between two different tube sizes within the same run, eliminating the need for an additional adapter. Installers working on compressed air, water treatment, or HVAC condensate or refrigerant-detection tubing will find this fitting appropriate for field connections. The white Nylon 11 body is compatible with a range of tube materials including polyethylene and polyurethane tubing.

Key Features

• Push-to-connect design allows tool-free tube insertion and removal
• Reducing union joins 1/4 inch OD tubing to 3/8 inch OD tubing in a single fitting
• Bio-sourced Nylon 11 body provides chemical resistance and impact toughness
• EPDM o-ring seals rated for 230 psi working pressure
• White color finish for easy identification in tubing assemblies
• Sold in a package quantity of 10 fittings

Compatibility

Designed as an OEM-style push-to-connect union replacement for pneumatic and fluid transfer tubing systems using 1/4 inch and 3/8 inch OD tubing.

Installation Notes

Depressurize and isolate the tubing system completely before removing or installing any push-to-connect fittings. Ensure tube ends are cut cleanly and squarely with a proper tube cutter to achieve a leak-free seal. Insert tubing fully until it seats against the internal stop, then perform a pull-test to confirm retention. Follow applicable plumbing or pneumatic codes, including ASME B31.1 or local mechanical codes, for the specific system type.